CHRISTIAN SOCIAL SERVICES OF ILLINOIS
NPI 1154399780
Clinic/Center - Mental Health (Including Community Mental Health Center) in Belleville, IL

NPI Status: Active since March 09, 2006

Contact Information

8601 WEST MAIN STREET SUITE 201
BELLEVILLE, IL
ZIP 62226
Phone: (618) 397-5900
Fax: (618) 394-5909

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  • Organization
  • Clinic/Center
  • Mental Health (Including Community Menta...

About CHRISTIAN SOCIAL SERVICES OF ILLINOIS

This page provides the complete NPI Profile along with additional information for Christian Social Services Of Illinois, a provider established in Belleville, Illinois operating as a Clinic/center, focusing in mental health (including community mental health center) . The healthcare provider is registered in the NPI registry with number 1154399780 assigned on March 2006. The practitioner's primary taxonomy code is 261QM0801X. The provider is registered as an organization and their NPI record was last updated December 2025. The provider's . The authorized official of this NPI record is Mr. Gary Huelsmann (Chief Executive Officer)

NPI
1154399780
Provider Legal Name
CHRISTIAN SOCIAL SERVICES OF ILLINOIS
Other Organization Name
Other Name Type
(6)
Entity Type
Organization
Location Address
8601 WEST MAIN STREET SUITE 201 BELLEVILLE, IL 62226
Location Phone
(618) 397-5900
Location Fax
(618) 394-5909
Mailing Address
8601 W MAIN ST STE 201 BELLEVILLE, IL 62223
Mailing Phone
(618) 213-8700
Mailing Fax
(618) 394-5909
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
03-09-2006
Last Update Date
12-17-2025
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Location Map

Secondary Locations

  • 10286 Fleming Rd
    Carterville, IL 62918
    (618) 985-2000
  • 900 Royal Heights Rd
    Belleville, IL 62226
    (618) 394-5900
  • 1300 Mercantile Dr
    Highland, IL 62249
    (618) 882-6800
  • 111 E 4th St Ste 125&300
    Alton, IL 62002
    (618) 468-1601
  • 228 Bradford Ln
    Waterloo, IL 62298
    (618) 939-4444
  • 4517 S State Route 159 Ste 4
    Glen Carbon, IL 62034
    (618) 205-8484
  • 230 Bradford Ln
    Waterloo, IL 62298
    (618) 939-4444
  • 988 N Illinois Route 3
    Waterloo, IL 62298
    (618) 939-4444

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Clinic/Center Mental Health (Including Community Mental Health Center)

Taxonomy Code
261QM0801X
Type
Ambulatory Health Care Facilities

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1101YM0800XBehavioral Health & Social Service Providers

Counselor
Mental Health

 
2251S00000XAgencies

Community/Behavioral Health

 
3253J00000XAgencies

Foster Care Agency

 
4322D00000XResidential Treatment Facilities

Residential Treatment Facility, Emotionally Disturbed Children

180025 (IL)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

MR. GARY HUELSMANN

Authorized Official Title
CHIEF EXECUTIVE OFFICER
Authorized Official Phone
(618) 213-8705

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
180025OTHER (01)ILDCFS CONTRACT #

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1154399780, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
1
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
4
Unchanged
Pos 5
3
Doubled → 6
Pos 6
9
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
7
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
0
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 5 → 10 → 1 3 → 6 9 → 18 → 9 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 1 + 1 + 0 + 4 + 6 + 9 + 1 + 8 + 7 + 1 + 6 + 24 = 70

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 70 is 70. The difference is the calculated check digit.

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1154399780.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1154399780, enumerated as an "organization" on March 09, 2006.

The provider is located at 8601 WEST MAIN STREET SUITE 201 BELLEVILLE, IL 62226 and the phone number is (618) 397-5900.

Clinic/Center with taxonomy code 261QM0801X and a focus in Mental Health (Including Community Mental Health Center).

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.